Waterproof structure of roof and wall joint and construction method thereof

Abstract

The application relates to the technical field of waterproof structures, in particular to a waterproof structure at a connecting position of a roof and a wall body, which comprises a wall body and a steel structure roof sandwich panel, the upper surface of the steel structure roof sandwich panel is fixedly provided with an L-shaped plate, one side of the L-shaped plate is parallel to the upper surface of the steel structure roof sandwich panel, and the other side extends upwards in parallel to the wall body, the outer surface of the wall body is fixedly provided with an h-shaped plate, the h-shaped plate comprises a vertical plate and a bent plate, the vertical plate is fixed on the wall body, the bent plate is located on one side of the vertical plate and forms a downwardly-opened U-shaped slot with the vertical plate, the outer surface of the wall body is provided with a surface layer, the surface layer is coated downwards to the lower edge of the h-shaped plate to cover the h-shaped plate, and the upper edge of the side of the L-shaped plate close to the wall body is inserted into the U-shaped slot. The application also relates to a construction method of the waterproof structure at the connecting position of the roof and the wall body, and the application has the effect of reducing waterproof failure caused by deformation during use.

Description

Technical Field

[0001] This application relates to the technical field of waterproof structures, and in particular to a waterproof structure for the connection between a roof and a wall and its construction method. Background Technology

[0002] During factory construction, waterproofing is required at joints to reduce seepage or leakage. Hybrid factory buildings are widely used due to their comprehensive functionality. They include independent frame structure factory buildings (typically multi-story) and independent steel structure factory buildings (single-story). Because the number of stories differs between frame and steel structure factory buildings, their heights also differ. Therefore, waterproofing is necessary at the connection between the roof of the independent steel structure factory building and the side walls of the independent frame structure.

[0003] In related technologies, the waterproofing method between the roof surface and the vertical wall surface involves using cement mortar to create a triangular water-guiding surface at the intersection of the roof surface and the vertical wall surface. This allows rainwater along the vertical wall surface to flow towards the center of the roof surface, reducing the flow of rainwater into the gaps between the roof surface and the vertical wall surface.

[0004] However, during the use of the above structure, the roof surface and the vertical wall surface are affected by different deformations, which can easily lead to gaps between the water guide surface and the roof surface or wall surface, causing waterproofing failure. Summary of the Invention

[0005] To reduce waterproofing failures caused by deformation during use, this application provides a waterproofing structure and construction method for the connection between roof and wall.

[0006] This application provides a waterproof structure at the junction of a roof and a wall, employing the following technical solution:

[0007] A waterproof structure at the junction of a roof and a wall includes a wall and a steel structure roof sandwich panel. An L-shaped plate is fixedly installed on the upper surface of the steel structure roof sandwich panel. One side of the L-shaped plate is parallel to the upper surface of the steel structure roof sandwich panel, and the other side extends upward parallel to the wall. An H-shaped plate is fixedly installed on the outer surface of the wall. The H-shaped plate includes a vertical plate and a folded plate. The vertical plate is fixed to the wall, and the folded plate is located on one side of the vertical plate, forming a downward-opening U-shaped slot with the vertical plate. A surface layer is provided on the outer surface of the wall. The surface layer is applied downward to the lower edge of the H-shaped plate to cover the H-shaped plate. The upper edge of the L-shaped plate, near the wall, is inserted into the U-shaped slot.

[0008] By adopting the above technical solution, during use, the H-shaped plate is fixed to the outer surface of the wall, and a surface layer is set on the outer surface of the wall to cover the H-shaped plate, so that the H-shaped plate is located inside the surface. At the bottom of the H-shaped plate, a U-shaped slot formed by a vertical plate and a folding plate is used to connect the L-shaped plate. One side of the L-shaped plate is fixed to the steel structure roof sandwich panel to seal between the L-shaped plate and the steel structure roof sandwich panel, while the other side of the L-shaped plate is inserted into the U-shaped slot. This allows the L-shaped plate to seamlessly connect the steel structure roof sandwich panel and the wall. At the same time, since the L-shaped plate can move within the U-shaped slot, it can reduce the movement of the L-shaped plate during use to accommodate the deformation of the steel structure roof sandwich panel and the wall, thereby reducing the occurrence of waterproof failure.

[0009] Preferably, the upper surface of the steel structure roof sandwich panel has multiple crests, the L-shaped panel covers at least two crests, and a sealing rubber strip is provided on the top of the crests. The L-shaped panel and the steel structure roof sandwich panel are sealed by the sealing rubber strip.

[0010] By adopting the above technical solution, the crests of the upper surface of the steel structure roof sandwich panel are sealed with sealing rubber strips to seal the L-shaped panel and the crests, thereby reducing rainwater seepage into the house along the upper surface of the steel structure roof sandwich panel, and further reducing rainwater inflow into the house at the two crests.

[0011] Preferably, a flashing plate is provided in the U-shaped slot. The flashing plate includes an integrally formed horizontal plate, vertical plate and inclined plate. The horizontal plate is perpendicular to the vertical plate. One side of the horizontal plate is used to install the vertical plate and the other side is used to connect the inclined plate. The inclined plate is inclined downward on the side away from the horizontal plate. Waterproof sealant is filled between the flashing plate and the lower side of the surface layer. The vertical plate is located in the U-shaped slot.

[0012] By adopting the above technical solution, the flashing includes vertical plates, horizontal plates, and inclined plates. The horizontal and vertical plates can block the contact between the L-shaped plate and the surface, so that the water flowing down the surface needs to pass through the flashing. At the same time, the waterproof sealant seals the flashing between the flashing and the surface, reducing the seepage of rainwater into the U-shaped slot along the flashing. The horizontal plate also directs the rainwater away from the wall. Meanwhile, the waterproof sealant does not affect the movement of the L-shaped plate in the U-shaped slot.

[0013] Preferably, the vertical plate has a folded edge on the side away from the horizontal plate, and an adjustment component is provided between the folded edge and the upper side of the L-shaped plate. The adjustment component is used to adjust the position of the horizontal plate relative to the L-shaped plate and is used to abut against the upper side of the L-shaped plate.

[0014] By adopting the above technical solution, an adjustment component is set between the folded edge and the L-shaped plate. The distance between the horizontal plate and the lower side of the surface layer can be adjusted by the adjustment component, so that the gap of the waterproof sealant is more uniform and the spacing is more appropriate, thereby making the waterproof sealant better seal between the flashing and the surface layer.

[0015] Preferably, the vertical plate has multiple protrusions on the side facing the L-shaped plate, and the protrusions protrude from the surface of the vertical plate by at least 3 mm.

[0016] By adopting the above technical solution, the protrusion extends more than 3mm beyond the surface of the vertical plate. The protrusion can control the distance between the vertical plate and the L-shaped plate, so that there is enough width between the vertical plate and the L-shaped plate, reducing the amount of water entering the U-shaped slot due to capillary action.

[0017] Preferably, the adjusting assembly includes an adjusting bolt and an adjusting plate. The adjusting plate is elongated and placed parallel to the intersection of the folded edge and the vertical plate. The adjusting bolt passes through the adjusting plate and is threadedly connected to the adjusting plate. The end of the adjusting bolt is used to abut against the upper side of the L-shaped plate. The adjusting plate abuts against the lower surface of the folded edge. The folded edge has a notch at the position of the adjusting assembly, and the adjusting bolt is located in the notch.

[0018] By adopting the above technical solution, the adjusting bolt is threadedly connected to the adjusting plate. Rotating the adjusting bolt allows the adjusting plate to move along the length of the adjusting bolt, thereby adjusting the distance between the upper side of the L-shaped plate and the folded edge that the end of the adjusting bolt abuts. At the same time, the long strip-shaped adjusting plate can reduce the risk of tipping over during placement into the U-shaped slot.

[0019] Preferably, the L-shaped plate has an arc-shaped portion at the corner, the arc-shaped portion protruding inwards from the corner of the L-shaped plate, a foam rod is provided on the inner side of the arc-shaped portion, and a pad for supporting the foam rod is provided below the foam rod, the foam rod being deformed by the compression of the L-shaped plate.

[0020] By adopting the above technical solution, the arc-shaped part is elastic, and the deformation of the arc-shaped part can make the L-shaped plate better adapt to the deformation of the steel structure roof sandwich panel and the wall. At the same time, the foam rod supports the L-shaped plate, reducing the downward bending of the L-shaped plate due to gravity, thereby preventing water from accumulating on the inside of the L-shaped plate.

[0021] Preferably, the wall includes a precast concrete block section, which corresponds to the H-shaped plate. Two rows of cement nails are provided on the upright plate, one row of cement nails is located above the folded plate, and the other row is located at the position corresponding to the folded plate. Through holes for the cement nails are opened on the folded plate.

[0022] By adopting the above technical solution, the wall formed by the precast concrete blocks can make the vertical slab stronger after being installed with cement nails, and reduce the surface cracking caused by the movement of the H-shaped slab during use.

[0023] Preferably, the L-shaped plate is provided with a self-tapping screw for fixing the L-shaped plate at the crest position. The self-tapping screw is fitted with a rubber ring, and an annular groove is formed on the side wall of the rubber ring. The self-tapping screw is fitted with a housing, and the housing is fitted into the annular groove. A cement mortar block is placed inside the housing.

[0024] By adopting the above technical solution, the rubber ring fitted on the self-tapping screw can abut against the L-shaped plate under the action of the self-tapping screw, so that the position of the self-tapping screw is sealed by the rubber ring. Furthermore, the self-tapping screw is waterproofed by the cement mortar block inside the mounting housing, reducing the damage to the self-tapping screw caused by corrosion.

[0025] This application also provides a construction method for a waterproof structure at the junction of a roof and a wall, employing the following technical solution:

[0026] A construction method for a waterproof structure at the junction of a roof and a wall includes wall construction, installation of steel structure roof sandwich panels, installation of H-shaped panels, surface coating, marking on L-shaped panels, positioning of flashing, fixing of L-shaped panels, and application of waterproof sealant. Marking on L-shaped panels requires first placing the L-shaped panel inside the installed H-shaped panel, and then marking the line while maintaining a certain distance from the lower surface of the surface layer. Positioning of flashing involves aligning the marking on the L-shaped panel with the lower surface of the horizontal plate in the flashing and adjusting the position using an adjusting component.

[0027] By adopting the above technical solution, after the H-shaped plate is installed, the surface is coated. At the same time, the L-shaped plate is marked according to the installed H-shaped plate to ensure that the gap between the installed flashing plate and the lower surface of the surface is accurate. This ensures that the waterproof sealant has a good sealing effect when it is applied.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By inserting one side of the L-shaped plate into the U-shaped slot, the L-shaped plate can move within the U-shaped slot, thereby reducing the movement of the L-shaped plate during use to accommodate the deformation of the steel structure roof sandwich panel and wall, and reducing the occurrence of waterproof failure;

[0030] 2. The flashing and the surface are sealed with waterproof sealant to reduce rainwater seepage into the U-shaped slot along the flashing, and the application of waterproof sealant will not affect the movement of the L-shaped plate in the U-shaped slot.

[0031] 3. By utilizing the deformation of the curved part, the L-shaped plate can better adapt to the deformation of the steel structure roof sandwich panel and the wall. At the same time, the foam rod supports the L-shaped plate, reducing the downward bending of the L-shaped plate due to gravity. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0034] Figure 3 This is a schematic diagram of the structure of the h-shaped plate in the embodiments of this application;

[0035] Figure 4 This is an exploded view of the flashing installation location in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the installation structure of the self-tapping screw in the embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Wall; 11. Brick section; 12. Precast concrete block section; 2. Steel structure roof sandwich panel; 21. Corrugated peak; 22. Roof purlin; 3. L-shaped panel; 31. Curved section; 4. H-shaped panel; 41. Vertical panel; 411. Cement nail; 42. Folded plate; 421. Through hole; 43. U-shaped slot; 5. Surface layer; 51. Waterproof sealant; 6. Flashing; 61. Horizontal plate; 62. Vertical plate; 621. Protrusion; 63. Inclined plate; 64. Folded edge; 641. Notch; 7. Adjustment component; 71. Adjusting bolt; 72. Adjusting plate; 8. Foam rod; 81. Spacer; 9. Self-tapping screw; 91. Rubber ring; 92. Circular groove; 93. Outer shell; 94. Cement mortar filling block; 10. Sealing rubber strip. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0039] This application discloses a waterproof structure at the junction of a roof and a wall, with reference to... Figure 1The structure includes a wall 1 and a steel structure roof sandwich panel 2. The top surface of the steel structure roof sandwich panel 2 has multiple corrugations 21, and roof purlins 22 are installed below the steel structure roof sandwich panel 2 for support. An L-shaped plate 3 is installed on the upper surface of the steel structure roof sandwich panel 2. One side of the L-shaped plate 3 can be parallel to the upper surface of the steel structure roof sandwich panel 2, and the other side is vertically upward and parallel to the outer surface of the wall 1, so that the L-shaped plate 3 can connect the steel structure roof sandwich panel 2 and the wall 1. At the same time, the L-shaped plate 3 is located at least two corrugations 21 on one side of the steel structure roof sandwich panel 2 to prevent rainwater from flowing into the room along the top surface of the steel structure roof sandwich panel 2.

[0040] refer to Figure 2 and Figure 3 The L-shaped plate 3 extends upwards at least 250mm from one side parallel to the wall 1, and an H-shaped plate 4 is fixedly installed on the outer surface of the wall 1. The H-shaped plate 4 includes an integrally formed vertical plate 41 and a folded plate 42. The vertical plate 41 is parallel to the outer surface of the wall 1. The folded plate 42 is L-shaped and one side is connected to the middle of the vertical plate 41. The other end extends downwards from the vertical plate 41, parallel to the vertical plate 41, and is spaced apart from the vertical plate 41 to form a U-shaped slot 43. The opening of the U-shaped slot 43 is arranged downwards. The H-shaped plate 4 is arranged 150-180mm above the upper surface of the steel structure roof sandwich panel 2, so that the upper edge of the L-shaped plate 3 parallel to the wall 1 is inserted into the U-shaped slot 43 from bottom to top. The outer surface of the wall 1 is provided with a surface layer 5, which is formed by applying cement mortar. The thickness of the surface layer 5 is greater than the thickness of the H-shaped plate 4, so that the surface layer 5 extends downwards to the bottom of the folded plate 42, covering the entire H-shaped plate 4. The width of the U-shaped slot 43 is greater than the thickness of the L-shaped plate 3, allowing the L-shaped plate 3 to move within the U-shaped slot 43. When different deformations occur between the steel structure roof sandwich panel 2 and the wall 1, the L-shaped plate 3 can adapt by moving within the U-shaped slot 43, reducing the damage to the waterproofing caused by the difference in deformation, thereby improving the waterproofing effect.

[0041] refer to Figure 2 and Figure 3A flashing plate 6 is installed within the U-shaped slot 43. The flashing plate 6 includes a horizontal plate 61, a vertical plate 62, and an inclined plate 63. The horizontal plate 61 is horizontally positioned and can be parallel to the upper surface of the steel structure roof sandwich panel 2. The side of the horizontal plate 61 closest to the wall 1 is connected to the vertical plate 62, and the side away from the wall 1 is connected to the inclined plate 63. The horizontal plate 61 and the vertical plate 62 are perpendicular to each other, and the horizontal plate 61, the vertical plate 62, and the inclined plate 63 are integrally formed. The inclined plate 63 gradually slopes downwards on the side away from the horizontal plate 61. During installation, the vertical plate 62 is inserted into the U-shaped slot 43 and installed on the L-shaped plate 3, so that there is a gap of 3-6mm between the horizontal plate 61 and the lower edge of the surface layer 5. Since the setting of the H-shaped plate 4 can make the lower edge of the surface layer 5 relatively flush, after the horizontal plate 61 is installed, waterproof sealant 51 is applied between the horizontal plate 61 and the lower edge of the surface layer 5. The waterproof sealant 51 waterproofs the flashing plate 6 and the surface layer 5. When rainwater falls on the flashing plate 6, it can flow away from the wall 1 through the horizontal plate 61. The waterproof sealant 51 can reduce the capillary effect caused by the flashing plate 6 and the water seepage into the house.

[0042] refer to Figure 1 and Figure 3 The wall 1 includes a brick section 11 and a precast concrete block section 12. The precast concrete block section 12 is used to correspond to the installation position of the H-shaped plate 4. The upper and lower parts of the precast concrete section are filled by the brick section 11. Two rows of cement nails 411 are provided on the H-shaped plate 4. The H-shaped plate 4 is nailed to the precast concrete block section 12 by the cement nails 411, so that the connection between the H-shaped plate 4 and the wall 1 is relatively firm, reducing the gaps caused by the H-shaped plate 4 falling off or shifting from the wall 1 and causing cracks in the surface layer 5. One row of cement nails 411 is located above the folded plate 42, and the other row of cement nails 411 is located in the position corresponding to the folded plate 42. At the same time, through holes 421 are opened on the folded plate 42. The diameter of the through holes 421 is larger than that of the cement nails 411, so that the cement nails 411 can be directly nailed to the upright plate 41 through the through holes 421.

[0043] refer to Figure 2 and Figure 4A folded edge 64 is provided on the upper side of the vertical plate 62. The folded edge 64 extends away from the horizontal plate 61 on the side of the vertical plate 62. The width of the folded edge 64 is less than the thickness of the L-shaped plate 3. An adjustment component 7 is provided on the upper side of the folded edge 64 and the L-shaped plate 3. The adjustment component 7 is used to adjust the installation height of the flashing plate 6, thereby facilitating the control of the gap between the horizontal plate 61 and the surface layer 5. During installation, one side of the L-shaped plate 3 can be inserted into the U-shaped slot 43 first, and a line can be drawn according to the distance of the lower side of the surface layer 5. The line is drawn to ensure the reserved gap width. Then, the L-shaped plate 3 is taken out, and the adjustment component 7 is installed between the folded edge 64 and the upper side of the L-shaped plate 3. The lower surface of the horizontal plate 61 is aligned with the position of the line by adjusting the component 7. Then, the L-shaped plate 3 and the vertical plate 62 in the flashing plate 6 are inserted into the U-shaped slot 43 at the same time. Since the position of the horizontal plate 61 has been adjusted by the marked position, the gap between the flashing plate 6 installed in the U-shaped slot 43 and the lower side of the surface layer 5 is relatively accurate, ensuring the width of the waterproof sealant 51 so that the waterproof sealant 51 can stick the flashing plate 6 to the surface layer 5. Even if the L-shaped plate 3 moves downward, the position of the flashing plate 6 remains unchanged.

[0044] refer to Figure 4 Multiple protrusions 621 are provided on one side of the vertical plate 62. The protrusions 621 are at least 3mm higher than the surface of the vertical plate 62. The protrusions 621 are used to control the distance between the vertical plate 62 and the L-shaped plate 3, thereby maintaining a large gap between the vertical plate 62 and the L-shaped plate 3 and preventing rainwater from moving upward between the L-shaped plate 3 and the vertical plate 62 due to capillary action. The protrusions 621 can be formed by stamping. The adjusting assembly 7 includes an adjusting bolt 71 and an adjusting plate 72. The adjusting bolt 71 passes through the adjusting plate 72 and is threadedly connected to the adjusting plate 72. The adjusting plate 72 is used to abut against the side of the folded edge 64 near the vertical plate 62, and the end of the adjusting bolt 71 is used to abut against the upper side of the L-shaped plate 3. The adjusting plate 72 is elongated and parallel to the intersection of the folded edge 64 and the vertical plate 62. The folded edge 64 has a notch 641 at the position where the adjusting component 7 is placed. The adjusting bolt 71 is located in the notch 641 and extends upward. By rotating the adjusting bolt 71, the adjusting plate 72 can adjust the position of the flashing plate 6 relative to the L-shaped plate 3. The elongated adjusting plate 72 can reduce the tipping of the adjusting component 7 during movement.

[0045] refer to Figure 1An arc-shaped portion 31 is provided at the corner of the L-shaped panel 3. The arc-shaped portion 31 protrudes inward towards the corner of the L-shaped panel 3, so that the inner side of the arc-shaped portion 31 faces the connection between the wall 1 and the steel structure roof sandwich panel 2. A foam rod 8 with elasticity is placed on the inner side of the arc-shaped portion 31. A pad 81 is provided below the foam rod 8. The height of the pad 81 is such that it can compress the foam rod 8 upward, so that after installation, the foam rod 8 can form an upward resisting force on the side of the L-shaped panel 3 close to the wall 1. Thus, the foam rod 8 supports the L-shaped panel 3 upward, reducing the bending of the L-shaped panel 3 due to downward gravity over a long period of time, making it easier for rainwater to collect on the inner side of the corner of the L-shaped panel 3. Meanwhile, the inclined plate 63 in the flashing plate 6 extends horizontally beyond the arc-shaped portion 31 on the side away from the horizontal plate 61, so that rainwater can reach the side of the arc-shaped portion 31 away from the wall 1 along the inclined plate 63, reducing the amount of rainwater reaching the side of the L-shaped plate 3 close to the wall 1, and reducing the occurrence of leakage.

[0046] refer to Figure 5 A sealing rubber strip 10, 20mm wide and 8mm thick, is affixed to the top surface of the corrugations 21 of the steel structure roof sandwich panel 2. The sealing rubber strip 10 reduces water seepage between the steel structure roof sandwich panel 2 and the L-shaped panel 3 by attaching the sealing rubber strip 10. Self-tapping screws 9 are installed on the upper surface of the L-shaped panel 3, penetrating the L-shaped panel 3 and connecting to the steel structure roof sandwich panel 2. The self-tapping screws 9 correspond to the positions of the corrugations 21 of the steel structure roof sandwich panel 2, thus fixing the L-shaped panel 3 to the steel structure roof sandwich panel 2. A rubber ring 91 is fitted onto the self-tapping screw 9, which abuts against the upper surface of the L-shaped plate 3. An annular groove 92 is formed on the side wall of the rubber ring 91. A housing 93 is connected to the rubber ring 91. The housing 93 is hexagonal in shape, with its bottom fitting into the annular groove 92. The upper part of the housing 93 is open, and a cement mortar block 94 is placed inside the housing 93. During installation, the self-tapping screw 9, along with the rubber ring 91 and the housing 93, is simultaneously connected to the steel structure roof sandwich panel 2. The rubber ring 91, compressed by the self-tapping screw 9, seals the gap between the self-tapping screw 9 and the L-shaped plate 3. The cement mortar block 94, formed by injecting cement mortar into the housing 93, protects the self-tapping screw 9 and reduces damage caused by corrosion during use.

[0047] This application also discloses a construction method for a waterproof structure at the junction of a roof and a wall, used for constructing the aforementioned waterproof structure at the junction of a roof and a wall. The method includes wall construction 1, installation of steel structure roof sandwich panels 2, installation of H-shaped panels 4, application of surface layer 5, marking on L-shaped panels 3, positioning of flashing 6, fixing of L-shaped panels 3, and application of waterproof sealant 51. Marking on L-shaped panels 3 requires first placing L-shaped panels 3 inside the installed H-shaped panels 4, and then marking the lines while maintaining a certain distance from the lower surface of surface layer 5. Positioning of flashing 6 involves aligning the markings on L-shaped panels 3 with the lower surface of the horizontal plates 61 in flashing 6, and adjusting the position using adjusting components 7.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof structure at the junction of a roof and a wall, characterized in that: The structure includes a wall (1) and a steel structure roof sandwich panel (2). An L-shaped plate (3) is fixedly installed on the upper surface of the steel structure roof sandwich panel (2). One side of the L-shaped plate (3) is parallel to the upper surface of the steel structure roof sandwich panel (2), and the other side extends upward parallel to the wall (1). An H-shaped plate (4) is fixedly installed on the outer surface of the wall (1). The H-shaped plate (4) includes a vertical plate (41) and a folded plate (42). The vertical plate (41) is fixed on the wall (1). The folded plate (42) is located on one side of the vertical plate (41) and forms a downward-opening U-shaped slot (43) with the vertical plate (41). A surface layer (5) is provided on the outer surface of the wall (1). The surface layer (5) is applied downward to the lower edge of the H-shaped plate (4) to cover the H-shaped plate (4). The upper edge of the L-shaped plate (3) is inserted into the U-shaped slot (43) on the side close to the wall (1). A flashing plate (6) is provided inside the U-shaped slot (43). The flashing plate (6) includes an integrally formed horizontal plate (61), vertical plate (62), and inclined plate (63). The horizontal plate (61) is perpendicular to the vertical plate (62). One side of the horizontal plate (61) is used to install the vertical plate (62), and the other side is used to connect the inclined plate (63). The inclined plate (63) is inclined downward on the side away from the horizontal plate (61). Waterproof sealant (51) is filled between the flashing plate (6) and the lower side of the surface layer (5). The vertical plate (62) is located inside the U-shaped slot (43). The vertical plate (62) has a folded edge (64) on the side away from the horizontal plate (61). An adjustment component (7) is provided between the folded edge (64) and the upper side of the L-shaped plate (3). The adjustment component (7) is used to adjust the position of the horizontal plate (61) relative to the L-shaped plate (3). The adjustment component (7) is used to abut against the upper side of the L-shaped plate (3). The adjustment assembly (7) includes an adjustment bolt (71) and an adjustment plate (72). The adjustment plate (72) is long and parallel to the intersection of the folded edge (64) and the vertical plate (62). The adjustment bolt (71) passes through the adjustment plate (72) and is threadedly connected to the adjustment plate (72). The end of the adjustment bolt (71) is used to abut against the upper side of the L-shaped plate (3). The adjustment plate (72) abuts against the lower surface of the folded edge (64). The folded edge (64) has a notch (641) at the position of the adjustment assembly (7). The adjustment bolt (71) is located in the notch (641).

2. The waterproof structure at the connection between the roof and the wall according to claim 1, characterized in that: The upper surface of the steel structure roof sandwich panel (2) has multiple peaks (21), and the L-shaped panel (3) covers at least two peaks (21). A sealing rubber strip (10) is provided on the top of the peaks (21), and the L-shaped panel (3) and the steel structure roof sandwich panel (2) are sealed by the sealing rubber strip (10).

3. The waterproof structure at the connection between the roof and the wall according to claim 1, characterized in that: The vertical plate (62) has a plurality of protrusions (621) on the side facing the L-shaped plate (3), and the protrusions (621) protrude from the surface of the vertical plate (62) by at least 3 mm.

4. A waterproof structure for the connection between a roof and a wall according to any one of claims 1 or 3, characterized in that: An arc-shaped part (31) is provided at the corner of the L-shaped plate (3). The arc-shaped part (31) protrudes into the inside of the corner of the L-shaped plate (3). A foam rod (8) is provided on the inside of the arc-shaped part (31). A pad (81) for supporting the foam rod (8) is provided below the foam rod (8). The foam rod (8) is deformed by the compression of the L-shaped plate (3).

5. A waterproof structure for the connection between a roof and a wall according to claim 1, characterized in that: The wall (1) includes a precast concrete block (12), which corresponds to the h-shaped plate (4). The upright plate (41) is provided with two rows of cement nails (411), one row of cement nails (411) is located above the folded plate (42), and the other row is located at the position corresponding to the folded plate (42). The folded plate (42) is provided with through holes (421) through the cement nails (411).

6. A waterproof structure at the connection between a roof and a wall according to claim 2, characterized in that: The L-shaped plate (3) is provided with a self-tapping screw (9) for fixing the L-shaped plate (3) at the crest (21). A rubber ring (91) is fitted on the self-tapping screw (9). An annular groove (92) is opened on the side wall of the rubber ring (91). A shell (93) is fitted on the self-tapping screw (9). The shell (93) is installed in the annular groove (92). A cement mortar block (94) is placed inside the shell (93).

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